Table 2.

Overview of GP’s/GP practices assessment moments and outcome measurements

Outcomes	Instrument	Prerandomisation	Pre-training	Post-training
Feasibility parameters
Willingness of GP practices to be contacted about PRINCE Primary		x
Willingness of GP practices to consent and be randomised		x
Availability of data needed and the usefulness and limitations of the general practice databases		x
Interest of GPs to attend the GP training (intervention arm only)			x
GP training outcomes
Knowledge and confidence	Self-report		x	x

GPs, general practitioners; PRINCE Primary, Persistent Physical Symptoms Reduction Intervention: a System Change Evaluation in Primary Care.